The fins are only soldered to the heatpipes in some heatsinks, most others just press-fit them. Does look good tho.

Heat sinks with soldered fins perform better, in fact all current "top performers" have the fins soldered to the heat pipes (all premium offerings from Prolimatech, Thermalright, Noctua and Phanteks, a few from Zalman also).

__________________"Sometimes a cigar is just a cigar" - Unknown (but sometimes attributed to Sigmund Freud)